Question

Add the following: $343,356,-343$

Answer 1

Adding integers:

$$\begin{gathered} 343+356+(-343) \\ =\left\{343+356\right\}+(-343) \\ =\left\{343-343\right\}+\left(356\right) \\ =0+356 \\ =356 \end{gathered}$$

Thus, the sum of $343,356,-343$ is $356$.